Design, fabrication, and metrology of polymer gradient-index lenses for high-performance eyepieces

被引：5

作者：

Corsetti, James A. ^{[1
]}

Visconti, Anthony J. ^{[1
]}

Fang, Kejia ^{[1
]}

McCarthy, Peter ^{[1
]}

Schmidt, Greg R. ^{[1
]}

Moore, Duncan T. ^{[1
]}

机构：

[1] Univ Rochester, Inst Opt, Rochester, NY 14627 USA

来源：

CURRENT DEVELOPMENTS IN LENS DESIGN AND OPTICAL ENGINEERING XIV | 2013年 / 8841卷

关键词：

Gradient-index; spherical gradient-index; polymer optics; optical design; eyepiece; methyl methacrylate; styrene; AXIAL GRIN MATERIALS; OBJECTIVE DESIGN; OPTICS;

D O I：

10.1117/12.2041791

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

High-performance eyepiece designs have been carried out using both spherical and radial gradient-index (GRIN) elements. Eyepiece designs of both geometries are shown to offer superior imaging performance with fewer elements when compared to purely homogeneous systems. These GRIN lenses are formed from monomer diffusion between polymethyl methacrylate (PMMA) and polystyrene (PSTY) during the polymerization process, resulting in a copolymer of the two homogeneous materials. A process for fabricating spherical GRIN elements is discussed where copolymer axial GRIN blanks are thermally compressed using spherical surface molds. This process curves the nominally-straight isoindicial surfaces of the axial GRIN rod to be consistent with the shape found during optimization of the design. Once compressed, the spherical blanks are diamond-turned for final surface figure and finish. Measurement of the GRIN profile is carried out using the Schmidt immersion technique in a Mach-Zehnder interferometer. Tolerances specific to GRIN elements are identified and determined to be readily achievable using the aforementioned manufacturing process.

引用

页数：9

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